Morton's Neuroma: Why That Burning Pain in the Ball of Your Foot Won't Go Away
Morton's neuroma is one of those conditions that mystifies patients before diagnosis. The pain doesn't feel like the typical foot ache — it's sharp, electric, burning, sometimes accompanied by numbness in the toes. Many patients describe a sensation of "walking on a marble" or "having a fold in my sock that I can't get rid of." It comes and goes, often worse with certain shoes or activities, and rarely shows up on standard imaging. The result is a frustrating diagnostic journey before patients learn what's actually wrong.
What Is Morton's Neuroma?
Morton's neuroma is a thickening of the tissue around one of the nerves that runs between the metatarsal bones in the ball of the foot. Despite the name, it's not actually a tumor — "neuroma" in this context refers to a benign enlargement of the nerve and surrounding tissue caused by chronic compression and irritation.
The condition most commonly affects the nerve between the third and fourth toes (third interspace). Less often, it occurs between the second and third toes. It rarely affects the other interspaces.
Symptoms
The classic symptoms:
Burning or sharp pain in the ball of the foot, often radiating into the toes
Numbness or tingling in the affected toes
A sensation of standing on a pebble, marble, or fold of fabric
Pain that worsens with weight-bearing activities, especially in tight shoes
Relief when shoes are removed and the foot is massaged
Symptoms that come and go, sometimes for weeks at a time
A clicking or popping sensation when squeezing the foot side-to-side
The pain is typically intermittent in early stages, becoming more constant as the neuroma enlarges.
What Causes Morton's Neuroma
The condition develops from chronic compression of the nerve. Several factors contribute:
Footwear
Narrow, pointed-toe shoes that compress the metatarsals together
High heels that shift weight forward onto the forefoot
Shoes with inadequate forefoot space
Athletic shoes with worn-out forefoot cushioning
Foot Structure
Flat feet or high arches
Bunions or hammertoes that alter forefoot mechanics
Excessive pronation
Tight calf muscles
Activity-Related Factors
High-impact sports (running, racquet sports, basketball)
Activities involving rocking up onto the toes
Significant time spent on hard surfaces
Sudden increases in activity level
Other Risk Factors
More common in women (related to footwear patterns)
Age 30-60 most commonly affected
Inflammatory arthritis
Previous foot trauma
Diagnosis
Morton's neuroma is primarily a clinical diagnosis. Key examination findings include:
Reproduction of pain when the foot is squeezed side-to-side
Mulder's click — a palpable click when compressing the metatarsals while pressing on the involved interspace
Numbness in the toes on either side of the affected interspace
Tenderness directly between the metatarsal heads
Imaging is sometimes used to confirm the diagnosis or rule out other causes:
Ultrasound is the most useful imaging study and can directly visualize the neuroma
MRI provides detailed imaging when diagnosis is unclear
X-rays are typically normal but help rule out stress fractures or arthritis
Treatment Options
Conservative Treatment
Most cases respond to conservative measures, though it can take time:
Footwear changes. Wide toe box, low heel, soft cushioning. The single most impactful change for many patients.
Custom orthotics with metatarsal pads. Properly designed orthotics with a metatarsal dome positioned just behind the affected nerve can spread the metatarsals and reduce nerve compression.
Activity modification. Reducing or modifying high-impact activities while symptoms resolve.
Anti-inflammatory medications. For symptom management.
Cortisone injections. Injection of corticosteroid around the nerve can provide significant relief. Multiple injections may be needed, though there are limits on how many are safe.
Alcohol sclerosing injections. A series of dilute alcohol injections can chemically reduce the size of the neuroma. Used in selected cases.
When Surgery Is Considered
For patients who don't respond to conservative care, surgical removal of the neuroma (neurectomy) is highly effective. Recovery typically involves 4-6 weeks before returning to most activities. Most patients experience significant relief, though some develop a permanent area of numbness in the toes that's usually well-tolerated.
When to See a Podiatrist
Burning, tingling, or electric pain in the ball of the foot
Pain that worsens with shoes and improves when you take them off
Numbness in adjacent toes
Symptoms that have lasted more than a few weeks
Conservative measures (better shoes, padding) haven't resolved the problem
At Table Mountain Foot and Ankle, we diagnose Morton's neuroma frequently — often after patients have spent months trying to figure out what's wrong. Schedule an appointment to identify what's causing your forefoot pain and start effective treatment.
